package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * @Author: Bbz
 * @verson: 1.0
 * @Date: 2023/7/3 20:47
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //1.将提交的密码进行MD5加密
        String password = employee.getPassword();
        password= DigestUtils.md5DigestAsHex(password.getBytes());
        //2.根据提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询则返回登录失败结果
        if(emp==null){
            return R.error("登录失败,没有该用户");
        }
        //4.密码对比 如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败,密码错误");
        }
        //5.查看员工状态,如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus()==0){
            return R.error("登录失败,该员工已经被禁用");
        }
        //6.登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 退出登录
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录的员工id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工,员工信息：{}",employee.toString());

        //设置初始密码123456,需要进行MD5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //获取当前登录的id
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page:{},pageSize:{},name:{}",page,pageSize,name);

        //构造分页构造器
        Page pageinfo=new Page(page,pageSize);
        //构造条件过滤器
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        lambdaQueryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        lambdaQueryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageinfo,lambdaQueryWrapper);
        return R.success(pageinfo);
    }

    /**
     * 通过id查询用户
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable("id") Long id){
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }else{
            return R.error("没有找到该和员工");
        }
    }


    /**
     * 根据id修改员工信息
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> updateEmployee(HttpServletRequest request,@RequestBody Employee employee){
        log.info("修改员工信息{}",employee.toString());
        long id = Thread.currentThread().getId();
        log.info("EmployeeController线程id未：{}",id);
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setUpdateUser(empId);
        //employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }


}
